Telegraphy – Systems – Simplex-reversing periodic
Patent
1966-11-22
1976-04-13
Wilbur, Maynard R.
Telegraphy
Systems
Simplex-reversing periodic
178DIG21, 250203CT, H04N 300
Patent
active
039506118
ABSTRACT:
A video tracking system that produces voltages representative of the location of a designated target relative to the tracking axis of a transducer. An error detector unit compares the position of a target, of selected intensity contrast, to that of a tracking gate and updates the gate position to track the target. The error detector unit includes a combination of two integrators coupled in series with two or more gate circuits that are synchronized with the tracking gate. The tracking response characteristic may be selected for optimum performance with expected target profiles by variation of the relative signal gain and timing of the gate circuits.
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Callis James W.
Chambers William A.
Birmiel H. A.
Gerry Martin E.
Hughes Aircraft Company
MacAllister W. H.
Wilbur Maynard R.
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